获取动作目标元素的余烬 [英] get action target element in ember

问题描述

如何获取触发点击事件的目标元素的对象。例如，如果我有一个模板：

How can I get the target element's object on which a click event was fired. For eg, if I have a template like:

<table>
<tr>
    <th {{action "someAction"}} >Type</th>
</tr>
</table>

在我的控制器中我有相应的动作定义如下：

and in my controller I have corresponding action defined like:

action:{
    someAction : function(){
        //get the th element object 
    }
}

似乎事件对象没有传递，因为我尝试过

It seems like event object is not passed, because I had tried

action:{
    someAction : function(event){
        //event is undefined!
    }
}

更新：
感谢Márcio和Jeremy。我现在有了一个工作的解决方案。
我的模板看起来像：

UPDATE : Thanks Márcio and Jeremy. I've now got a working solution. My template looks like:

<thead>
        {{#view AS.MyView sortBy="value"}}Value{{/view}}
</thead>

我的看法如下：

AS.MyView = Ember.View.extend({
attributeBindings: ['sortBy'],
classNames: ['sortable'],
tagName: 'th',
click: function(evt) {
    var target = evt.target, self = this;
    this.get('controller').send('setSort',$(target).attr('sortBy'));

    $(target).parent().find('th').removeClass('desc').removeClass('asc');
    $(target).addClass(self.get('controller.sortAscending')?'asc':'desc');
}
});

推荐答案

classNameBinding 是这个用例的一个很好的选择。

classNameBinding is a great option for this use case.

仅供参考，如果您需要处理低级浏览器事件，可以在查看层。

Just for reference, if you need to deal with low level browser events, you can do that in the View layer.

http：// emberjs .com / guides / views / handling-events /

{{#view App.ClickableView}}
This is a clickable area!
{{/view}}

App.ClickableView = Ember.View.extend({
  click: function(evt) {
    alert("ClickableView was clicked!");
  }
});

这篇关于获取动作目标元素的余烬的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！